Improvement in boot and shoe nailing machines



L. R. MEARS.

Boot and Shoe Nailing-Machines.

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TNITED STATES PATENT FFIGE.

LEMUEL It. MEARS, OF BROOKLYN, NEV YORK.

IMPROVEMENT IN BOOT AND SHOE NAILING MACHINES.

Specification forming part of' Lette rs Patent No. 152,146, dated June16,1874; application filed May 16, 1374.

plying the nails. For the nails I propose to use the kind made in theform ofa long comb, and now used with hand nailing-machines, the nailsbeing connected together by the heads, so as to feed into the machinelike abar, and be detached, one by one, as they are driven. Theinvention consists of a naildriver and a bender, arranged together in astock, and geared by rock -levers with cams for operating them also,automatic feed in eehanism, for feeding t-he nails to the driver; and,also, automatic feed mechanism, for feeding the boot or shoe, all socombined and arranged that the nail-bar and the boot or shoe feed alongsimultaneously, and immediately after each feed-1nove1nent the bendermoves down a little in advance of the driver to adjust the nail to thedriving channel, and then the driver moves down and drives the nail intothe shoe.

Figure l is a front elevation of my improved machine. Fig. 2 is asectional elevation taken on the line .fr x, Fig. l. Fig. 3 is asectional elevation taken on the line y y, Fig. 2. Fig. 4 is ahorizontal section taken on the line .e z, Fig. 3. Fig. 5 is a verticalsection 011 the line w uf of Fig. 4, and Fig. (5 is an end elevation ofthe feed-channel for the nails. Fig. 7 is a detail of the nail-driverand rod.

Similar letters of reference indicate corresponding parts.

A represents the nailing-stock, containing the nail-driver B, the benderC, and the cutter D, for cutting the nails a off from the combbar F, anddriving them down through the channel G into the sole of the boot orshoe, which is to be fed along under the nozzleshaped termination H ofthe lower end of the stock A. The naildriver B is connected to a rod, I,fitted in the stock A, to work up and down, and connected to therock-lever J, which position.

is connected with the cam-disk K, so that the cam L forces the driverdown, and the rim or flange raises and holds it up. The bender C isconnected to rod N, which works in a longitudinal groove, O, in the rodI, and is connected to the rock-lever I, which is also connected withthe cam-disk K, so that the cam Q forces the bender down and holds itwhile the driver cuts off and drives the nail, and the rim or iiange Itraises and holds the vbender up. Springs maybe used instead of flangesfor raising the driver and the bender. rIhe bender is to turn the naildown into the line of the driving-channel G after it has passed beyondthe cutter into said channel, the way 0n which the nail-bar is fed intothe stock being a little inclined, and the end of the cutter being alsoinclined, so that when the nail arrives under the driver it pointsobliquely to one side of the channel, which is necessary for the nailbarto run properly on the ways. The bender-rod N has a wide rib', P', whichworks in a vertical slot, Q', in the upper part of the stock A, which,together with the rod N working in the slot O of the driver stock, keepsthe stock from turning out of its true It is the channeled way inA whichthe nail-bar is placed to be fed into the nailingstock, said way beingarranged horizontally behind the stock A, and entering it at the side,as seen in Figs. 3, 4, and 5. rlhe channel is lnade in two parts, a andb, at right angles to each other,a being for the shanks of the nails,and b for the flange of the nailbar, forming the heads of the nails whenthe nails are cnt off. The channel is a little inclined from thevertical plane, as shown in Figs. 3 and 6, in order that the nail-barswill lie in it alike, although they may vary somewhat in size.

The nails are fed along, one at a time, into the stock A by the pawl S,which I propose to mount on a slide, T, in ways U, on the side of thefeedway It, near the nailing-stock A; and I connect the slide to arock-lever, V, by a rod, IV, having an adjustingjoint, X, and therock-lever is connected with the cam-disk K, so that the cam Q throwsthe pawl forward to feed the nails. The spring Y pulls the pawl backagainst an adjusting-screw, Z, by which the movement of the pawl isregulated to correspond with the distance from nail to nail, while theadjusting-joint X. regulates the position of the pawl with reference tothe nail-drivin g channel. The spring m prevents the nails from movingback with the feed-pavvl.

The boot or shoe is fed by the pawl @which is Worked by the cam e,roek-leverf, and connecting-rod g. l1 is a holding pawl or presser. Theboot or shoe, with the last in it, Will be presented under the nozzle Hof the stock on any suitable holder, and guided by the operator, so thatthe -pawl d will Work in the chaunel formed in the sole for the nails.

The mechanism here represented for feeding the boot or shoe is the sameas is used in a machine for sewing shoes, and I do not claim it,especially', and the way for feeding the nail-bar is also similar tothat used in hand naili11g-machines.

The nail-driver B is subjected to considera.- ble Wear, and requires tobe ground off square on the end, from time to time, so that it shortensgradually, and it is subject to too n'iuell strain to be held by a setTserew acting against its side. Therefore, I have arranged an eccentriccam, fi, in a socket iu the rod, for sustaining the force of the shockson the driver, and for adjusting to follow the driver, as it has to belet down from time to time.

Having thus described my invention, l

claim as 'new and desire to secure by Letters Patentl. The` combination,in a boot and shoe nailing machine, of the nail-bender and naildriver,having rock-levers J and l) and cams L and Q, arranged to operate themindependently of, but rela-tively to, each other, in the orderdescribed.

2. The combination, With the slotted feedchannel, of thev nail-feedingpaWl attached to a horizontally-reciprocating slide, rod W, lever V, camQ, and spring Y, substantially as shown and described, said pawl beingthus arranged for operating independently of the nail-driver, as setforth.

3. The combination, with the stock or head A, bender, and driver, ofautomatic feed mechanism, for feeding the boot or shoe, substantially asspecified.

4. The combination of the adjustable eccentrio with the nail-driver Band rod I, substantially as specified.

5. The combination of the bender-rod N, having rib l, with thedriver-rod I and stock A, provided, respectively, with grooves O and Q',substantially as and for the purpose specified. I

LEMUEL R. MEARS. Witnesses:

T. B. Mosnnn, ALEX. F. ROBERTS.

